Annular hole cutter

Details Annular hole cutter Annular hole cutter

1991-08-21

1993-06-08

Howell, Daniel W.

Cutting by use of rotating axially moving tool

Tool or tool with support

Having axial, core-receiving central portion

408703, B23B 5104

Patent

active

052173348

ABSTRACT:
An annular hole cutter has a radially inner cutting tooth portion and a radially outer cutting tooth portion. Each of the inner and outer cutting tooth portions is formed with a flute for ejecting cut chips on the outer periphery of the cutter, and a cutting edge for radially outwardly pushing the cut chips. Therefore, the cut chips are smoothly ejected through the flute, and thus an annular hole is precisely cut at high speed.

REFERENCES:
patent: 1745799 (1930-02-01), Carson et al.
patent: 3765789 (1973-10-01), Hougen
patent: 4322187 (1982-03-01), Hougen
patent: 4500234 (1985-02-01), Orth et al.
patent: 4573838 (1986-03-01), Omi et al.
patent: 4586857 (1986-05-01), Ohmi
patent: 4632610 (1986-12-01), Hougen
patent: 4758120 (1988-07-01), Bijl

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